285 as design core exam

Hi all,
today i was looking at my certification planner on the MCP site. what i've done so far :
270-271-272-621-290-291-293-294-284

so for my MCSE i have only a design core exam left to do. I just saw that 285 (designing exchange.. ) qualifies as a design core exam as well...
now the big question : as i already passed 284, will passing 285 give me both my MCSE credentials and my MCSE + Messaging ?

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